Suzuki VZR1800 2007 Service Manual page 484

DETECTED
DTC No.
ITEM
ISC valve
H
C40
P0505
L
P0506
P0507
Fuel pump
C41
relay
P0230
H
P0230
L
C42 Ignition
P1650 switch
HO2 sensor
(E-02, 19, 24)
C44/C64
P0156/P0130
C44/C64
P0161/P0135
DETECTED FAILURE CONDITION
ISC valve motor current is higher than
specified valve.
ISC valve motor circuit is open.
Idle speed is lower than the desired
idle speed.
Idle speed is higher than the desired
idle speed.
No voltage is applied to the fuel pump,
although fuel pump relay is turned ON,
or voltage is applied to fuel pump
although fuel pump relay is turned
OFF.
Voltage is applied to fuel pump
although fuel pump relay is turned
OFF.
No voltage is applied to the fuel pump,
although fuel pump relay is turned ON.
Ignition switch signal is not input to
ECM.
HO2 sensor output voltage is not input
to ECM during engine operation and
running condition.
(Sensor voltage < 0.45 V)
In other than the above value, C44
(P0156/0130) is indicated.
The Heater can not operate so that
heater operation voltage is not supply
to the oxygen heater circuit, C44
(P0161/0135) is indicated.
SERVICING INFORMATION
CHECK FOR
ISC valve circuit shorted to
BATT or ground circuit open
ISC valve circuit open or BATT
circuit open
W/Y or Lg wire openor ground
circuit open
Air circuit clogged
ISC valve is fixed
W/Y or Dgr wire open or shorted
or ground circuit open
ISC valve is fixed
ISC valve hose connection
Fuel pump relay, lead wire/cou-
pler connection, power source to
fuel pump relay and fuel injec-
tors
Fuel pump relay switch circuit
shorted to power source
Fuel pump relay (switch side)
Fuel pump relay circuit open or
short
Fuel pump relay (coil side).
Ignition switch, lead wire/coupler
HO2 sensor circuit open or
shorted to ground
HO2 sensor lead wire/coupler
connection
Battery voltage supply to the
HO2 sensor
11-5